Measurement and Computational Fluid Dynamics Modelling of Aerosol Particles in Buildings

Abstract

In this study, measurement of aerosol particle movement was carried out in a single-zone chamber. Supply and exhaust grilles were installed in the chamber at various locations to facilitate the investigation of different airflow and parti cle patterns (e.g. short circuiting, displacement flow). The age-of-air for tracer gas and aerosol particles was used to determine the relative ventilation effi ciency and average air exchange efficiency for different flow patterns. The effect of airflow patterns on the deposition rate of aerosol particles on the surfaces of the chamber was also determined. In addition, the computational fluid dynamics (CFD) model, FLUENT, was used to model particle flow in the chamber. This paper also includes a study of aerosol particle flow in a two-zone environmental chamber. Measurements of interzonal particle flow were carried out using tracer gas and aerosol particles.